"Due to the sheer amount of PRs that is coming our way on GitHub, and
the limited number of developers looking after them, we cannot
thoroughly test all PRs. Therefor, we kindly ask you to provide a link
to a build log when a package is bumped or a new ebuild is introduced to
But it doesn't say how. The emerge man page doesn't say anything on
keeping build logs. They are deleted and there's no option to tell
emerge to not do that.